Vulcanizer.



'J. K. WILLIAMS. VULGANIZER. APPLIOATIION FILED APR.1, 190s.

Patented Mar. 9, 1909.

WITNESSES KIWI:

UNITED STATES PATENT oFFIoE.

JOHN K. WILLIAMS, OF AKRON, OHIO, ASSIGNOR OF ONE-HALF TO THE WILLIAMSFOUNDRY AND MACHINE COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

. VULCANIZER.

Specification of Letters Patent.

- Patented March 9, 1909.

To all whom it may concern:

Be it known that I, JOHN K. WiLLIAMs, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented new and useful Improvements in Vulcanizers, of which thefollowing is a specification.

This invention relates to improvements in vulcanizers designedmoreespecially for use in repairing vehicle-wheel tires or tire-cases.

In repairing a tire by vulcanization it is important that all goodportions of the tire sur rounding the injured part may be as fullyrotected from injury from the vulcanizing eat as possible and thatshoulders or ridges shall not be formed at points of junction betweenthe patch employed in repairing'the tire with the main body of the same.

The objects of this invention are to provide a strong, simple, efficientand economically opera-ting vulcanizer in which desired portions of atire or tire case may be placed and subjected to heat for the purpose ofvulc-anizing a patch on an injured portion thereof.

A further and special object of this invention is to provide avulcanizer of the class described with means whereby the vulcanizingheat is prevented from spreading to other portions of the tire or tirecase surrounding so the injured portion undergoing repairs containedwithin the body of the vulcanizer.

A practical embodiment of this invention is illustrated in theaccompanying drawings in which similar reference numerals indicate likeparts in the different figures.

Referring to the drawings, Figure 1 is a view in side elevation of my imroved vulcanizer. Fig. 2 is a plan view 0 a yoke employed in connectionwith the" device shown 40 in Fig. 1, and, Fig. 3 is a sectional view online X of Fig. 1.

Referring to the drawings in detail, the reference numeral 1 indicatesthe body of the vulcanizer which is formed in the arc of a cir cle andcomprises an inner trough-shaped curing cavity inclosed by a wall 2 anda'surrounding or outer wall 3, the space between the walls 2 and3 beingpreferably divided into steam cavities 4, 5 and 6 extendinglongitudinally of the body of the device and approximately the samelength thereof. The cavities 4 and 5 are separated from the cavity 6 bymeans of integrally-formed partitions 7 and 8, and strengthening lugs 9are in terposed at intervalsbetween the under face tion 3.

of the wall 2 and the bottom of the body por The steam chambers 4 and 5are provided with inlets 1'0 for the admission of the heating agent andwith outlets '11 by which the products of condensation thereof arepermitted to escape. The cavity "6 is also rovided with an inlet 12 andoutlet 13. The ody of the vulcanizer is also provided with supportinglegs 15. The entire body of the device 1 ispreferably made integral andinview of this fact it will be apparent that when any one of thecavities 4, 5 or '6 is heated by steam the heat is absorbed by the metalsurrounding the particular chamber which is being used and rapidlycommunicates itself to the balance of the device; and in order-toprevent this .as far as possible, there is formed in the body of'thevulcanizer between the steam cavities 4 and 6 and 5 and 6 alongitudinally-extend 7 5 ing groove or space 1'6 which maybe left openfor the admission of air, as shown in Fig. 3 or may. befilled with aninsulating material 17 as indicated in this figure; in

either case the effect of the interposed groove is to prevent the heatin one of the steam chambers from being communicated to the balance ofthe device and from thence to the good or uninjured portions of a tirecontained in the vulcanizer.

In the upper face of the vulcanizer are mounted a pair of bolts 18surrounded by sleeves 19 against which the heads of the bolts arescrewed, thereby limiting the dis-' tance between the heads of the boltsand the 'upper face of the vulcanizenand also constitutingawear-resisting cover for said bolts. The tire or tire case is held inthe curing cavity by means of a member 20 having a curvatureapproximating the curvature of the body of the vulcanizenwith a flatupper face and witlrits under face formed to receive a tire or tirecase, as shown in Fig. 3 and of a width sufficient to enter the curingcavity of the vulcanizer body. Before the tire, designated in thedrawings by the reference numeral 21, is placed in the vulcanizercavity, the member 20 is preferably secured in position thereon and thetwo are slipped into position in the cavity with the injured portion ofthe tire or-tire case so placed as to be opposite one of the chambers 4,5 or 6.

In order to hold the tire or tire case firmly in the vulcanizer duringthe repairing thereof, I employ .a yoke 22 having a central threadedopening 23 to receive a screw .24 rovidedwith an operating handle 25 anda oose head 26 at its lower end. The outer ends of the yoke 22 areprovided with recesses 27 arranged to inclose the sleeves 19 and engageunder the heads of the bolts 18 when the head 26 on the screw 24 is inenscrew 24 is then positioned with the recesses 27 engaging the sleeves19 and by manipulating the handle 25, sulficient ressure is producedthrough the medium 0 the screw 24, on the outer face of the member 20,to force the tire or tire case 21 into snug en- 1 gagement with thecuring cavity of the vulcanizer Which is nearest or opposite the damagedportion of the tire, which eifectually vulcanizes the patch or repairingmedium required for closing the opening in the tire or tire case. Thegroove 16 whether open for the admission of air or closed by aninsulating material 17 prevents diffusion of heat from the steamchamber, employed in repairing the tire, to the good or' uninjuredportions of the tire or tire case. I

4 It is obvious that allportions of the tire or tire case beyond thepatched or repaired part will be kept cool through the medium of thegroove 16 or insulating material. 17 while the patched part will besubjected to a vulcanizing heat against the walls of the particularsteam chamber 0 posite to which the patched portion is place hence, allportions of the tire will be fully protected'from injury or excessiveheat, and as the tire is snugly forced into the curing cavity throughthe medium of the compression screw 24 no shoulders or ridges will beformed at the junction of the patchwith the body portion are not beingused for the reception of steam the unused chambers to aid the resultsought by the interposition of the grooves 16 and their containedinsulating material for better preventing the spread of heat from onechamber to other portions of the vulcanizer portion having a curingcavity therein to receive the article to be vulcanized and spaced steamchambers extendinglongitudinally of and ositioned around said curingcavity, said body )ortion provided with a groove interposed etweencontiguous steam chain"- bers for limiting the diffusion of heattherefrom, said steam chambers adapted to be independently heatedwhereby a selected portion of said curing cavity may be exclusivelyheated. I g

2. A vulcanizer comprising a unitary body portion having a curing cavitytherein to receive the article to be vulcanized and spaced steamchambers extending longitudinally of and ositioned around said curingcavity, said ody portion provided with a groove interposed betweencontiguous steam chambers for limiting the diffusion of heat therefrom,an insulating member positioned in said groove and means for conveying aheating medium to any of said steam chambers whereby a selected portionof said curing cavity may be exclusively heated. 3. A vulcanizercomprising a body portion having a curing cavity therein to receive anarticle to be vulcanized and independent steam chambers positionedaround said curing cavity, said body portion being provided with aninsulating "space interposed between contiguous steam chambers forlimiting the diffusion of heat therefrom, an insulating member adaptedto be ositioned in said space, a member receiva le in said curing cavityhaving one faceadapted to engage an article placed therein, a fixedmember mounted on said body portion and a detachable member cooperatingwith said fixed memberand provided with means engaging said first-namedmember for forcing said article into snug engagement with the in teriorof said curing cavity.

- 4. A vulcanizer comprising a body portion having a curing cavitytherein to receive the articleto be vulcanized and spaced steam chambersextending longitudinally of and positioned around said curing cavity,each of said curing cavities being ca able of being independentlyheated, said ody portion being formed with an insulating spaceinterposedbetween contiguous steam chambers for limiting the diffusionof heat therefrom, a member having one face shaped to receive an articlein said'vulcanizer, a pair of bolts mounted on said body portion, adetachable yoke extending between said bolts, and a threaded elementcarried by said yoke adapted to engage said member and clamp saidarticle snugly against the interior of said fixed member mounted on saidbody portion, 15

curing cavity, whereby a selected portion of a detachable membercooperating with said said article may beheld against the heated portionof said curing cavity.

5. A vulcanizer comprising a body portion having a curing cavity thereinto receive an article to be vulcanized and independent: steam chamberspositioned around said curing cavity, said body portion being providedwith an insulating space interposed between contiguous steam chambersfor limiting the diffusion of heat therefrom, a member receivable insaid curing cavity having one face shaped to engage an article placedtherein, a

I fixed member and provided with means en 5 gaging said first namedmember for forcing said article into snug engagement with the 5 interiorof said curing cavity.

' In testimony. whereof I have hereunto set my hand in presence of twosubscribing witnesses. 1

JOHN K. NILLIAMS.

Witnesses O. E. HUMPHREY, GLENARA Fox;

